212120101121109 has 32 divisors (see below), whose sum is σ = 287155734641664. Its totient is φ = 139263627041280.

The previous prime is 212120101121059. The next prime is 212120101121113. The reversal of 212120101121109 is 901121101021212.

It is not a de Polignac number, because 212120101121109 - 2²⁰ = 212120100072533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120101121189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300696802 + ... + 301401404.

It is an arithmetic number, because the mean of its divisors is an integer number (8973616707552).

Almost surely, 2^{212120101121109} is an apocalyptic number.

It is an amenable number.

212120101121109 is a deficient number, since it is larger than the sum of its proper divisors (75035633520555).

212120101121109 is a wasteful number, since it uses less digits than its factorization.

212120101121109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709817.

The product of its (nonzero) digits is 144, while the sum is 24.

The spelling of 212120101121109 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred one million, one hundred twenty-one thousand, one hundred nine".